Photo by Dana Graves
Cosmic Times jumps from 1929 to 1955, because this happened.
So today I told the story of how blackouts in 1943 LA allowed a view of outer space that indicated there were two types of Cepheid Variables and thus the universe doubled in size.
I spoke of how when the story started Henrietta Leavitt, who was noticing what had to be noticed, was looking at Type 1's.
Shapely would venture into clusters of stars where Type 2's hung out. He would use a bit of parallax data using a nearby Type 1 to start measuring distant stars.
Hubble and Humason (the mule team driver and later telescope master) would venture into galaxies other than our own and see Type 1's and use Shapely's distance formulas.
Then Blaade took advantage of those blackouts, and saw there were two types, he realized Hubble and Humason had used a bad "Yardstick" and now our nearest galaxy neighbor was 1.6 billion light years away. The whole universe had doubled in size.
Read the Science Times Edition
and more fashion of 1955: